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UPD780076GC-XXX-AB8

8-bit Single-chip Microcontroller

NEC => Renesas Technology 

APPENDIX A DESCRIPTION OF SPD CHART

5. Conditional Loop (UNTIL)

The condition indicated by UNTIL is judged after processing has been executed, and the processing is repeatedly

executed until a given condition is satisfied (even if the condition is not satisfied from the start, the processing is

executed once).

• SPD chart

(UNTIL: condition)

Processing

Example Multiplies value of B register by 10 and stores result to A register

Initializes A register

Sets value to B register

Stores 10 to counter

(UNTIL: counter = 0)

A=A+B

Decrements counter

6. Conditional Loop (FOR)

While the condition of the parameter indicated by FOR is satisfied, processing is repeatedly executed.

• SPD chart

(FOR: initial value; condition; increment/decrement specification)

Processing

Example Clears 256 bytes to 0 starting from address HL

Sets first address to HL register

(FOR: WORKCT = #0; WORKCT < #256; WORKCT + +)

Clears address HL to 0

Increments HL register

384

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